Immunochemical and biochemical analysis of the proliferating cell nuclear antigen (PCNA) in HeLa cells.

Immunochemical and biochemical analysis of the proliferating cell nuclear antigen (PCNA) in HeLa cells.
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HeLa 细胞中增殖细胞核抗原 (PCNA) 的免疫化学和生化分析。

DOI:
10.1016/0014-4827(86)90073-x
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发表时间:
1986
影响因子:
3.7
通讯作者:
Mathews,MB
Mathews,MB
中科院分区:
医学3区
文献类型:
--
作者:
Sadaie,MR;Mathews,MB

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PCNA,也称为细胞周期蛋白,是一种分子量(MW)为35 000的蛋白质,积累在分裂和转化细胞的细胞核中,并与某些狼疮患者的自身抗体反应。使用间接免疫荧光技术,我们表明,狼疮血清中含有抗PCNA抗体揭示了一个异质性核荧光模式与异步HeLa细胞反应后,而与同步细胞的一系列不同的模式是通过细胞周期的进展披露。HeLa细胞mRNA的无细胞翻译,然后与抗PCNA血清免疫沉淀显示一个单一的蛋白质具有相同的表观分子量的PCNA标记在体内,这表明PCNA是不是来自一个较大的前体蛋白,并没有被翻译后的事件严重修改。然而,一组至少9个核多肽的分子量范围从约12000至110000的抗PCNA血清的免疫印迹识别,表明无论是额外的抗原位点产生的天然蛋白质的变性或额外的自身抗体存在于这些血清。我们还表明,PCNA和这些多肽中的几个与含有染色质的核结构。
PCNA, also known as cyclin, a protein of molecular weight (MW) 35 000, accumulates in the nuclei of dividing and transformed cells and reacts with autoantibodies from certain lupus patients. Using an indirect immunofluorescence technique, we show that lupus sera containing anti-PCNA antibodies reveal a heterogeneous nuclear fluorescence pattern upon reaction with asynchronous HeLa cells, whereas with synchronized cells a sequence of distinct patterns is disclosed on progression through the cell cycle. Cell-free translation of HeLa cell mRNA followed by immunoprecipitation with anti-PCNA sera shows a single protein with the same apparent MW as PCNA labelled in vivo, suggesting that PCNA is not derived from a larger precursor protein and is not grossly modified by post-translational events. However, a group of at least nine nuclear polypeptides ranging in MW from about 12000 to 110000 are recognized by immunoblotting with anti-PCNA sera, indicating either that additional antigenic sites are produced on denaturation of native proteins or that additional autoantibodies are present in these sera. We also show that PCNA and several of these polypeptides are associated with nuclear structures containing chromatin.
对培养的上皮细胞和成纤维细胞中的肿瘤转化敏感的人类蛋白质。
DOI: --
发表时间: 1982
期刊: Clinical Chemistry
影响因子: 9.3
作者:
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发表时间: 1978-01-01
期刊: CELL
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作者:
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DOI: --
发表时间: 1984
影响因子: 15.3
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发表时间: 1963-01-01
影响因子: 3.7
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TERASIMA, T;TOLMACH, LJ
通讯作者: TOLMACH, LJ
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DOI: --
发表时间: 1982
期刊:
影响因子: --
作者:
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通讯作者: A. Macgillivray